Anti-Shake Semiconductor Logic Chip With Dedicated Vibration Computing Unit
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Solution Overview
Problem
Existing semiconductor devices with anti-shake functions face challenges in achieving high-speed processing due to decreased microcomputer processing rates with increased signal processing volumes, and integrating dedicated signal processing circuits requires redesigns, leading to higher manufacturing costs.
Innovation Solution
A semiconductor device with a logic chip that includes a digital circuit capable of generating correction signals for vibration control, featuring a vibration computing unit for multiple stages of signal processing and a central processing unit for computation, allowing flexible computation distribution between dedicated circuits and the central processing unit, and a control signal output unit that can select between different vibration correction control methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a microcomputer is used for signal processing in anti-shake function, then various types of processing operations can be achieved by a single microcomputer, but the processing rate decreases as the volume of signal processing increases
Solution Approach 1:
The patent segments the signal processing function into two parts: a vibration computing unit with dedicated circuits for high-speed vibration signal processing, and a microcomputer for other control operations. This segmentation allows the vibration processing to be handled by specialized hardware for high speed while the microcomputer handles other tasks, resolving the contradiction between versatility and processing rate.
2Productivity
If dedicated signal processing circuits are integrated to increase processing rate, then high-speed processing is achieved, but redesign of dedicated circuits is required each time apparatus design is changed, significantly increasing manufacturing costs
Solution Approach 1:
The vibration computing unit is designed with a standardized interface that can work with different vibration correction control units. The unit can be used across multiple apparatus designs without requiring redesign, as it provides universal vibration signal processing capabilities that can be adapted to different correction mechanisms (lens shift, sensor shift, etc.), thereby reducing manufacturing costs while maintaining high processing rates.
3Adaptability or versatility
If dedicated circuits are redesigned for each apparatus design change, then the anti-shake function can be optimized for specific applications, but manufacturing costs significantly increase
Solution Approach 1:
The vibration computing unit incorporates configurable parameters and adjustable processing algorithms that can be dynamically adjusted through software or register settings rather than requiring hardware redesign. This allows the same hardware unit to be optimized for different applications (video cameras, digital still cameras, different lens types) while maintaining manufacturing efficiency, as the adaptability is achieved through reconfiguration rather than redesign.
Data Source
AI summary
A semiconductor device with an anti-shake function includes a logic chip having a digital circuit which obtains a value for vibration of an apparatus based on a vibration detection signal supplied from a vibration detection element to generate a correction signal. The logic chip includes a correction signal processing unit which generates the correction signal, and a control signal output unit which outputs a vibration control signal in accordance with the correction signal to a vibration correction control unit which executes vibration correction control for an optical component in accordance with vibration. The correction signal processing unit includes a vibration computing unit which is capable of executing a plurality of stages of signal processing operations, by dedicated circuits, respectively, and which generates the correction signal from the vibration detection signal, and a central processing unit capable of executing desired computation processing to be performed by the vibration computing unit, and a signal obtained by executing all or a part of the computation processing to be performed by the dedicated circuits by the central processing unit is supplied as the correction signal to the control signal output unit.